If warranty of your laptop is expiring, you can upgrade with 10% off for another year with ONSITE warranty.
My ideapad s540 needed keyboard to be fixed and I can't afford to send it to Depot (current warranty is expiring on 16th Nov), so upgraded to ONSITE for $101 approx for another year with 10% off code.
You can upgrade from within Lenovo Vantage software for ease, as its difficult to find serial no via url in link.
Thanks OP. Worked with the basic depot warranty as well.